PROBLEM 1-A uniform beam (uniform rod) is being used to support a sign: Suddenly, the fe horizontal support cable snaps, allowing the beam to rotate about the point making contact with the wall. The beam and the sign both weight 200 N. The beam is 3.00 m long. Find the angular acceleration of the beam at the moment the cable snaps. 30.0°

PROBLEM 1-A uniform beam (uniform rod) is being used to support a sign: Suddenly, the fe horizontal support cable snaps, allowing the beam to rotate about the point making contact with the wall. The beam and the sign both weight 200 N. The beam is 3.00 m long. Find the angular acceleration of the beam at the moment the cable snaps. 30.0°

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter8: Rotational Equilibrium And Rotational Dynamics

Section: Chapter Questions

Problem 35P: A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.400 m. The cylinder...

See similar textbooks

Similar questions

(a) When opening a door, you push on it perpendicularly with a force of 55.0 N at a distance of 0.850m from the hinges. What torque are you exerting relative to the hinges? (b) Does it matter if you push at the same height as the hinges?
Find the net torque on the wheel in Figure P10.23 about the axle through O, taking a = 10.0 cm and b = 25.0 cm. Figure P10.23
A uniform cylindrical grinding wheel of mass 50.0 kg and diameter 1.0 m is turned on by an electric motor. The friction in the bearings is negligible. (a) What torque must be applied to the wheel to bring it from rest to 120 rev/min in 20 revolutions? (b) A tool whose coefficent of kinetic friction with the wheel with a force of 40.0 N. What torque must be supplied by the motor to keep the wheel rotating at a constant angular velocity?
Suppose you exert a force of 180 N tangential to a 0.280-m-radius, 75.0-kg grindstone (a solid disk). (a) What torque is exerted? (b) What is the angular acceleration assuming negligible opposing friction? (c) What is the angular acceleration if there is an opposing frictional force of 20.0 N exerted 1.50 cm from the axis?
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.400 m. The cylinder is suspended several meters off the ground with its axis oriented horizontally, and turns on that axis without friction, (a) If a 75.0-kg man takes hold of the free end of the rope and falls under the force of gravity, what is his acceleration? (b) What is the angular acceleration of the cylinder? (c) if the mass of the rope were not neglected, what would happen to the angular acceleration of the cylinder as the man falls?
A boy rides his bicycle 2.00 km. The wheels have radius 30.0 cm. What is the total angle the tires rotate through during his trip?
PROBLEM 1-A uniform beam (uniform rod) is being used to support a sign: Suddenly, theifmas horizontal support cable snaps, allowing the beam to rotate about the point making contact with the wall. The beam and the sign both weight 200 N. The beam is 3.00 m long. Find the angular acceleration of the beam at the moment the cable snaps. 30.0°
PROBLEM 1-A uniform beam (uniform rod) is being used to support a sign: Suddenly, thefama horizontal support cable snaps, allowing the beam to rotate about the point making contact with the wall. The beam and the sign both weight 200 N. The beam is 3.00 m long. Find the angular acceleration of the beam at the moment the cable snaps. 30.0°
Problem 6 : Rotational Dynamics - Torque A 60 cm, uniform, 50 N shelf is supported horizontally by two vertical wires attached to the sloping cemnge. A 25 N tool is placed on the shelf midway between the points where the wires are attached to it. 1nd tu tension in each wire. 75.0 cm 20.0 сm, 25.0 cm Tool FT1 = FT2 =
O F You push on a door 18 cm from the hinge with a force F that has components Fx=7 Newtons and Fy=17 Newtons (see figure). What is the magnitude of the torque about the hinge? Answer in Nm.
A. Find the direction of the force the hinge exerts on the bridge. B. If the cable suddenly breaks, what is the initial angular acceleration of the bridge?
Which of the following statement is false? A Unit of Torque is Newton Meter. В None of the above. Angular acceleration of object is zero if it is not rotating or rotating with constant angular velocity. An object is said to be in equilibrium if and only if there is no resultant force and no resultant torque. E An object is said to be in equilibrium if and only if there is no resultant force and no resultant torque.